A10 Networks Reports Financial Results for the Third Quarter of 2026

November 5, 2026

Broad-Based Demand Drives 23% Revenue Growth and Record Quarterly Results

A10 Networks, Inc. (NYSE: ATEN), a leading provider of secure application services and solutions, today announced financial results for its third quarter ended September 30, 2026.

Third Quarter 2026 Financial Summary

  • Quarterly revenue of $91.5 million, a 22.6% year-over-year increase. Revenue for the first nine months of 2026 was $246.7 million compared to $210.2 million for the first nine months of 2025, an increase of approximately 17.4%.
  • GAAP gross profit of $72.1 million and non-GAAP gross profit of $73.3 million. GAAP gross margin was 78.7% and non-GAAP gross margin was 80.0%.
  • GAAP income from operations of $18.3 million, and Non-GAAP income from operations of $25.5 million.
  • GAAP net income of $17.2 million, or $0.23 per diluted share, non-GAAP net income of $23.6 million, or $0.31 per diluted share.
  • Non-GAAP Adjusted EBITDA of $29.5 million, or 32.2% of revenue.
  • The Company returned $27.4 million to investors, having repurchased 879 thousand shares during the quarter at an average price of $26.18 per share for a total of $23.0 million and having paid $4.4 million in cash dividends in the quarter.
  • The Board of Directors approved the quarterly cash dividend of $0.06 per share, payable December 1, 2026 to stockholders of record at the close of business on November 16, 2026.
  • As of September 30, 2026, A10 had $360.4 million in cash, cash equivalents, and marketable securities.

A reconciliation between GAAP and non-GAAP information is contained in the financial statements below.

“Third quarter revenue increased 22.6% year-over-year to record quarterly levels, supported by broad-based customer demand, with our business model enabling record non-GAAP operating and net income levels,” said Dhrupad Trivedi, President and Chief Executive Officer of A10 Networks. “Rising network traffic volumes, expanding AI deployments and increasingly complex security requirements are driving demand for A10’s networking and security solutions. Revenue from customers other than our largest customer grew double digits year over year in the quarter, underscoring the breadth of our momentum. Non-GAAP EPS grew faster than revenue, and our combined revenue growth and adjusted EBITDA margin exceeded the rule of 40.”

“Our priority remains supporting our customers, particularly as they deploy AI, while capturing growing demand and protecting the long-term earnings power of the business,” Trivedi continued. “As the industry navigates supply challenges, we are focused on translating revenue growth into higher gross profit dollars, operating leverage and EPS growth. Our progress, expanding global opportunity and continued execution give us confidence in setting long-term targets of $500 million in annual revenue through organic growth and $2.00 in annual non-GAAP EPS for fiscal year 2029. This target incorporates the accounting impact of our warrant agreement with our largest customer and implies a 14% compound annual revenue growth rate.”

2026 Outlook

Based on year-to-date performance, demand visibility and the current supply environment, management is updating its full-year 2026 outlook to the following:

  • Full-year revenue growth of approximately 16%, compared to prior guidance of 12-14% full-year growth.
  • Non-GAAP Adjusted EBITDA margin in excess of 30%
  • Non-GAAP diluted EPS of between $1.08 - $1.10, representing growth of 20-22% over 2025 and exceeding the revenue growth rate, compared to prior guidance of 14-16% EPS growth.

Conference Call

Management will host a call at 1:30 p.m. Pacific time (4:30 p.m. Eastern time) today, Thursday, November 5, 2026, to discuss these results.

Interested parties may access the conference call by dialing (888) 506-0062 (toll-free) or (973) 528-0011 (international) and referencing access code: 810983.

A live audio webcast of the conference call will be accessible from the “Investor Relations” section of A10 Network’s website at investors.a10networks.com. The webcast will be archived for one year. A telephonic replay of the conference call will be available until November 19, 2026 and may be accessed by dialing (877) 481-4010 (toll-free) or (919) 882-2331 (international) and entering the passcode: 54623.

Forward-Looking Statements

This press release contains “forward-looking statements,” including statements regarding dividends and capital return, demand and market trends, strategy and competitive positioning, our commercial partnerships and agreements, financial performance and profitability, supply chain management, 2026 financial guidance and our long-term financial targets. Forward-looking statements are subject to known and unknown risks and uncertainties and are based on assumptions that may prove to be incorrect, which could cause actual results to differ materially from those expected or implied by the forward-looking statements. Factors that may cause actual results to differ include any unforeseen need for capital which may require us to divert funds we may have otherwise used for the dividend program or stock repurchase program, which may in turn negatively impact our ability to administer the quarterly dividends or the repurchase of our common stock; a significant decline in global macroeconomic or political conditions that have an adverse impact on our business and financial results; an expansion of adversarial global trade dynamics or other changes to international trade regulations; business interruptions related to our supply chain; our ability to manage our business and expenses if customers cancel or delay orders; execution risks related to closing key deals and improving our execution; the continued market adoption of our products; our ability to successfully anticipate market needs and opportunities; our timely development of new products and features; our ability to achieve or maintain profitability; any loss or delay of expected purchases by our largest end-customers; our ability to maintain or improve our competitive position; competitive and execution risks related to cloud-based computing trends; our ability to attract and retain new end-customers and our largest end-consumers; our ability to maintain and enhance our brand and reputation; changes demanded by our customers in the deployment and payment model for our products; continued growth rates in markets relating to network security; the success of any future acquisitions or investments in complementary companies, products, services or technologies; the ability of our sales team to execute well; our ability to shorten our close cycles; the ability of our channel partners to sell our products; variations in product mix or geographic locations of our sales; risks associated with our presence in international markets; weaknesses or deficiencies in our internal control over financial reporting; our ability to timely file periodic reports required to be filed under the Securities Exchange Act of 1934; and other risks that are described in “Risk Factors” in our periodic filings with the Securities and Exchange Commission, including our Form 10-K filed with the Securities and Exchange Commission on February 25, 2026. We do not intend to update or alter our forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law.

Non-GAAP Financial Measures

In addition to disclosing financial measures prepared in accordance with U.S. generally accepted accounting principles (GAAP), we refer to certain non-GAAP financial measures, including non-GAAP net income, non-GAAP net income per basic and diluted share (or non-GAAP EPS), non-GAAP gross profit and gross margin, non-GAAP operating expenses, non-GAAP operating income and operating margin, EBITDA, Adjusted EBITDA and Adjusted EBITDA margin. Non-GAAP financial measures do not have any standardized meaning and are therefore unlikely to be comparable to similarly titled measures presented by other companies.

A10 Networks considers these non-GAAP financial measures to be important because they provide useful measures of the operating performance of the company by excluding certain items that, while they may recur, can vary significantly in amount and timing or are not directly indicative of ongoing operational trends, and are used by the company’s management to evaluate operating performance, prepare budgets and forecasts, and assess performance relative to peer companies.

Non-GAAP financial measures should not be considered in isolation from, or as a substitute for, financial information prepared in accordance with GAAP.

We define non-GAAP net income as our GAAP net income excluding: (i) stock-based compensation and related payroll tax, (ii) acquisition-related expense, (iii) amortization of acquired intangible assets, (iv) amortization of debt issuance costs, (v) certain legal expense, (vi) tax planning expense and (vii) income tax effect of non-GAAP items (i) to (vi) listed above. We define non-GAAP net income per basic and diluted share as our non-GAAP net income divided by our basic and diluted weighted-average shares outstanding. We define non-GAAP gross profit as our GAAP gross profit excluding (i) stock-based compensation and related payroll tax and (ii) amortization of acquired intangible assets. We define non-GAAP gross margin as our non-GAAP gross profit divided by our GAAP revenue. We define non-GAAP operating expense as our GAAP operating expense excluding (i) stock-based compensation and related payroll tax, (ii) acquisition-related expense, (iii) amortization of acquired intangible assets, (iv) certain legal expense and (v) tax planning expense. We define non-GAAP operating income as our GAAP income from operations excluding (i) stock-based compensation and related payroll tax, (ii) acquisition-related expense, (iii) amortization of acquired intangible assets, (iv) certain legal expense and (v) tax planning expense. We define non-GAAP operating margin as our non-GAAP operating income divided by our GAAP revenue. We define Adjusted EBITDA as our GAAP net income excluding (i) interest and other income, net, (ii) depreciation and amortization expense, (iii) provision for income taxes, (iv) stock-based compensation and related payroll tax, (v) acquisition-related expense, (vi) certain legal expense and (vii) tax planning expense. We define Adjusted EBITDA margin as our Adjusted EBITDA divided by our GAAP revenue. We define EBITDA as our GAAP net income excluding (i) interest and other income, net, (ii) depreciation and amortization expense and (iii) provision for income taxes.

Non-GAAP financial measures are presented for supplemental informational purposes only for understanding the company's operating results.

About A10 Networks

A10 Networks (NYSE: ATEN) delivers secure application and network solutions designed to protect, optimize, and scale business-critical systems across on-premises, hybrid cloud, and edge environments. Our portfolio is designed to enable large enterprises, service providers, and cloud platforms worldwide to achieve performance, reliability, and protection against cyber threats, while preparing their networks for the demands of AI and next-generation applications. Founded in 2004 and headquartered in San Jose, California, A10 Networks serves over 7,000 global customers. For more information, visit A10networks.com and follow us at A10Networks.

The A10 logo and A10 Networks are trademarks or registered trademarks of A10 Networks, Inc. in the United States and other countries. All other trademarks are the property of their respective owners.

Source: A10 Networks, Inc.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited, in thousands, except per share amounts, on a GAAP Basis)

Three Months Ended September 30,

Nine Months Ended September 30,

2026

2025

2026

2025

Net revenue:

Products

$

58,496

$

43,109

$

151,506

$

118,261

Services

33,049

31,573

95,176

91,941

Total net revenue

91,545

74,682

246,682

210,202

Cost of net revenue:

Products

13,315

8,101

32,324

23,561

Services

6,176

6,729

19,199

19,383

Total cost of net revenue

19,491

14,830

51,523

42,944

Gross profit

72,054

59,852

195,159

167,258

Operating expenses:

Sales and marketing

22,017

21,531

63,936

62,040

Research and development

21,573

18,377

61,744

50,533

General and administrative

10,169

6,950

29,161

22,602

Total operating expenses

53,759

46,858

154,841

135,175

Income from operations

18,295

12,994

40,318

32,083

Non-operating income (expense):

Interest income

3,289

3,386

9,992

8,170

Interest and other income (expense), net

(1,842

)

(2,387

)

(6,421

)

(3,853

)

Total non-operating income, net

1,447

999

3,571

4,317

Income before income taxes

19,742

13,993

43,889

36,400

Provision for income taxes

2,582

1,802

5,815

4,128

Net income

$

17,160

$

12,191

$

38,074

$

32,272

Net income per share:

Basic

$

0.24

$

0.17

$

0.53

$

0.45

Diluted

$

0.23

$

0.17

$

0.51

$

0.44

Weighted-average shares used in computing net income per share:

Basic

72,412

71,891

72,083

72,478

Diluted

75,702

73,046

74,953

73,805

A10 NETWORKS, INC.

RECONCILIATION OF GAAP NET INCOME TO NON-GAAP NET INCOME

(unaudited, in thousands, except per share amounts)

Three Months Ended September 30,

Nine Months Ended September 30,

2026

2025

2026

2025

GAAP net income

$

17,160

$

12,191

$

38,074

$

32,272

Non-GAAP items:

Stock-based compensation and related payroll tax

6,162

4,961

20,504

15,839

Acquisition-related expense

173

465

1,519

1,383

Amortization of acquired intangible assets

820

380

1,652

963

Amortization of debt issuance costs

366

—

1,096

—

Certain legal expense

—

22

807

1,269

Tax planning expense

—

—

—

150

Income tax-effect of non-GAAP items

(1,118

)

(1,318

)

(3,612

)

(4,687

)

Total non-GAAP items

6,403

4,510

21,966

14,917

Non-GAAP net income

$

23,563

$

16,701

$

60,040

$

47,189

GAAP net income per share:

Basic

$

0.24

$

0.17

$

0.53

$

0.45

Diluted

$

0.23

$

0.17

$

0.51

$

0.44

Non-GAAP items:

Stock-based compensation and related payroll tax

0.08

0.07

0.27

0.21

Acquisition-related expense

—

0.01

0.02

0.02

Amortization of acquired intangible assets

0.01

0.01

0.02

0.01

Amortization of debt issuance costs

—

—

0.02

—

Certain legal expense

—

—

0.01

0.02

Tax planning expense

—

—

—

—

Income tax-effect of non-GAAP items

(0.01

)

(0.02

)

(0.05

)

(0.06

)

Total non-GAAP items

0.08

0.06

0.29

0.20

Non-GAAP net income per share:

Basic

$

0.33

$

0.23

$

0.83

$

0.65

Diluted

$

0.31

$

0.23

$

0.80

$

0.64

Weighted average shares used in computing net income per share:

Basic

72,412

71,891

72,083

72,478

Diluted

75,702

73,046

74,953

73,805

Net income and earnings per share excluding adjustments are non-GAAP financial measures presented as supplemental financial measures to enable a user of the financial information to understand the impact of these adjustments on reported results and to facilitate comparison of operating results across reporting periods. These financial measures should not be considered an alternative to net income, operating income, cash flows provided by operating activities, or any other measure of financial performance or liquidity presented in accordance with U.S. GAAP. Our adjusted net income and earnings per share may not be comparable to similarly titled measures of another company because companies may not all calculate adjusted net income and earnings per share in the same manner.

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except par value, on a GAAP Basis)

As of
September 30,
2026

As of
December 31,
2025

ASSETS

Current assets:

Cash and cash equivalents

$

75,795

$

71,139

Marketable securities

284,570

306,714

Accounts receivable, net of allowances of $102 and $66, respectively

52,067

62,069

Inventory

36,434

18,032

Prepaid expenses and other current assets

29,826

18,000

Total current assets

478,692

475,954

Property and equipment, net

49,307

50,221

Goodwill

47,302

15,134

Intangible assets, net

13,406

6,259

Deferred tax assets, net

58,504

62,109

Other non-current assets

15,678

20,136

Total assets

$

662,889

$

629,813

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:

Accounts payable

$

16,359

$

11,694

Accrued and other liabilities

33,335

41,132

Deferred revenue, current

88,797

80,824

Total current liabilities

138,491

133,650

Deferred revenue, non-current

68,221

61,982

Long-term debt, net

219,884

218,787

Other non-current liabilities

3,471

3,848

Total liabilities

430,067

418,267

Stockholders' equity:

Common stock, $0.00001 par value: 500,000 shares authorized; 93,609 and 91,996 shares issued and 72,008 and 71,498 shares outstanding, respectively

1

1

Treasury stock, at cost: 21,601 and 20,498 shares, respectively

(277,809

)

(249,912

)

Additional paid-in-capital

557,647

531,790

Dividends paid

(85,770

)

(72,785

)

Accumulated other comprehensive income (expense)

(1,114

)

659

Retained earnings

39,867

1,793

Total stockholders' equity

232,822

211,546

Total liabilities and stockholders' equity

$

662,889

$

629,813

A10 NETWORKS, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands, on a GAAP Basis)

Nine Months Ended

September 30,

2026

2025

Cash flows from operating activities:

Net income

$

38,074

$

32,272

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization

13,258

10,876

Stock-based compensation

19,570

15,206

Other non-cash items

2,832

2,251

Changes in operating assets and liabilities:

Accounts receivable

10,025

14,803

Inventory

(18,443

)

2,728

Prepaid expenses and other assets

(6,758

)

(6,912

)

Accounts payable

3,951

(2,100

)

Accrued and other liabilities

(11,232

)

351

Deferred revenue

14,036

(7,288

)

Net cash provided by operating activities

65,313

62,187

Cash flows from investing activities:

Proceeds from sales and maturities of marketable securities

169,336

96,426

Purchases of marketable securities

(148,931

)

(278,920

)

Acquisition of businesses, net of cash acquired

(34,080

)

(19,100

)

Capital expenditures

(7,815

)

(13,464

)

Net cash used in investing activities

(21,490

)

(215,058

)

Cash flows from financing activities:

Proceeds from issuance of common stock under employee equity incentive plans

1,714

1,710

Proceeds from the issuance of convertible notes

—

225,000

Payment of debt issuance costs

—

(7,330

)

Repurchase of common stock

(27,897

)

(62,008

)

Payments for dividends

(12,984

)

(13,075

)

Net cash provided by (used in) financing activities

(39,167

)

144,297

Net increase (decrease) in cash and cash equivalents

4,656

(8,574

)

Cash and cash equivalents—beginning of period

71,139

95,129

Cash and cash equivalents—end of period

$

75,795

$

86,555

Non-cash investing and financing activities:

Transfers between inventory and property and equipment

$

41

$

314

Capital expenditures included in accounts payable

$

342

$

229

Common stock consideration for acquisition

$

5,035

$

—

Supplemental cash flow disclosure:

Cash paid for income taxes, net

$

7,485

$

3,694

Cash paid for interest on debt

$

6,188

$

—

A10 NETWORKS, INC.

RECONCILIATION OF GAAP GROSS PROFIT TO NON-GAAP GROSS PROFIT

(unaudited, in thousands, except percentages)

Three Months Ended

September 30,

Nine Months Ended

September 30,

2026

2025

2026

2025

GAAP gross profit

$

72,054

$

59,852

$

195,159

$

167,258

GAAP gross margin

78.7

%

80.1

%

79.1

%

79.6

%

Non-GAAP adjustments:

Stock-based compensation and related payroll tax

580

136

1,601

1,284

Amortization of acquired intangible assets

636

281

1,257

712

Non-GAAP gross profit

$

73,270

$

60,269

$

198,017

$

169,254

Non-GAAP gross margin

80.0

%

80.7

%

80.3

%

80.5

%

A10 NETWORKS, INC.

RECONCILIATION OF GAAP TOTAL OPERATING EXPENSES

TO NON-GAAP TOTAL OPERATING EXPENSES

(unaudited, in thousands)

Three Months Ended

September 30,

Nine Months Ended

September 30,

2026

2025

2026

2025

GAAP total operating expenses

$

53,759

$

46,858

$

154,841

$

135,175

Non-GAAP adjustments:

Stock-based compensation and related payroll tax

(5,582

)

(4,825

)

(18,903

)

(14,555

)

Acquisition-related expense

(173

)

(101

)

(1,519

)

(655

)

Amortization of acquired intangible assets

(184

)

(99

)

(395

)

(251

)

Certain legal expense

—

(22

)

(807

)

(1,269

)

Tax planning expense

—

—

—

(150

)

Non-GAAP total operating expenses

$

47,820

$

41,811

$

133,217

$

118,295

A10 NETWORKS, INC.

RECONCILIATION OF GAAP INCOME FROM OPERATIONS

TO NON-GAAP OPERATING INCOME

(unaudited, in thousands, except percentages)

Three Months Ended

September 30,

Nine Months Ended

September 30,

2026

2025

2026

2025

GAAP income from operations

$

18,295

$

12,994

$

40,318

$

32,083

GAAP operating margin

20.0

%

17.4

%

16.3

%

15.3

%

Non-GAAP adjustments:

Stock-based compensation and related payroll tax

6,162

4,961

20,504

15,839

Acquisition-related expense

173

101

1,519

655

Amortization of acquired intangible assets

820

380

1,652

963

Certain legal expense

—

22

807

1,269

Tax planning expense

—

—

—

150

Non-GAAP operating income

$

25,450

$

18,458

$

64,800

$

50,959

Non-GAAP operating margin

27.8

%

24.7

%

26.3

%

24.2

%

A10 NETWORKS, INC.

RECONCILIATION OF GAAP NET INCOME TO

EBITDA AND ADJUSTED EBITDA (NON-GAAP)

(unaudited, in thousands, except percentages)

Three Months Ended

September 30,

Nine Months Ended

September 30,

2026

2025

2026

2025

GAAP net income

$

17,160

$

12,191

$

38,074

$

32,272

GAAP net income margin

18.7

%

16.3

%

15.4

%

15.4

%

Exclude: Interest and other income, net

(1,447

)

(999

)

(3,571

)

(4,317

)

Exclude: Depreciation and amortization

4,840

3,799

13,258

11,079

Exclude: Provision for income taxes

2,582

1,802

5,815

4,128

EBITDA

23,135

16,793

53,576

43,162

Exclude: Stock-based compensation and related payroll tax

6,162

4,961

20,504

15,839

Exclude: Acquisition-related expense

173

101

1,519

655

Exclude: Certain legal expense

—

22

807

1,269

Exclude: Tax planning expense

—

—

—

150

Adjusted EBITDA

$

29,470

$

21,877

$

76,406

$

61,075

Adjusted EBITDA margin

32.2

%

29.3

%

31.0

%

29.1

%

Investor Contact:
Rob Fink / Tom Baumann
FNK IR
646.809.4048 / 646.349.6641
aten@fnkir.com

David Schroeder
VP, Corporate Development
investors@a10networks.com

Source: A10 Networks